X-Ray Emission Spectrum and Factors effect CH8

<p>Most x-rays are emitted with energy significantly lower than the maximum. (A)</p> Signup and view all the answers

<p>The specific energies of emitted characteristic x-rays. (A)</p> Signup and view all the answers

<p>It has a fixed shape for all x-ray systems. (A)</p> Signup and view all the answers

<p>The greatest energy level reached in the emission. (B)</p> Signup and view all the answers

<p>15 (A)</p> Signup and view all the answers

<p>X-ray energy decreases. (D)</p> Signup and view all the answers

<p>Patient age (A)</p> Signup and view all the answers

<p>Shifts energy distribution to higher values. (B)</p> Signup and view all the answers

<p>The number of x-rays is doubled. (C)</p> Signup and view all the answers

<p>It can be determined by integrating the number of x-rays at each energy. (C)</p> Signup and view all the answers

<p>Higher area indicates higher intensity. (A)</p> Signup and view all the answers

<p>It is always equal to the kVp. (C)</p> Signup and view all the answers

<p>Intensity increases while the shape remains constant. (A)</p> Signup and view all the answers

<p>Decreases x-ray beam intensity (D)</p> Signup and view all the answers

<p>It increases the average energy (B)</p> Signup and view all the answers

<p>Tungsten (B)</p> Signup and view all the answers

<p>It shifts to the right (C)</p> Signup and view all the answers

<p>Molybdenum (D)</p> Signup and view all the answers

<p>Increases the efficiency of production of bremsstrahlung radiation (C)</p> Signup and view all the answers

<p>It does not affect the characteristic spectrum (A)</p> Signup and view all the answers

<p>Higher atomic numbers can increase high-energy x-ray quantities (A)</p> Signup and view all the answers

A plot showing the frequency of specific X-ray energies emitted by an element. These energies correspond to transitions between electron energy levels.

Discrete energies of X-rays specific to an element, determined by differences in electron binding energies.

A continuous spectrum of X-ray energies emitted when high-speed electrons are decelerated.

A continuous X-ray spectrum spanning from 0 to the maximum electron energy.

Kilovolts peak, determines the maximum energy of bremsstrahlung X-rays

A plot of the frequency of emitted X-rays versus their energy.

Characteristic X-rays with high energy levels, originating from inner electron shells. Usually most intense.

Characteristic X-rays with lower energy levels, originating from outer electron shells.

X-ray energy is inversely proportional to its wavelength. Higher energy means shorter wavelength, and lower energy means longer wavelength.

The minimum wavelength, corresponding to maximum x-ray energy, is numerically equal to the kVp.

Changing mA (current) changes the amplitude (height) of the x-ray emission spectrum, but not its shape.

Increasing kVp increases x-ray quantity (intensity) approximately by the square of the factor kVp is increased.

Increasing kVp shifts the spectrum to a higher average energy (higher quality).

Calculating the total number of emitted x-rays involves summing all emitted x-rays across all energies (integrating the spectrum).

The area under the x-ray emission spectrum curve corresponds to the total emitted x-ray intensity or quantity.

Adding filtration to x-ray beam reduces intensity while increasing average energy.

Filtration absorbs low-energy x-rays more effectively than high-energy, causing a shift towards higher average energy.

Target atomic number affects both x-ray quantity and effective energy.

Higher atomic number leads to an increased number of high-energy x-rays and a shift in the characteristic spectrum towards higher energies.

Tungsten is common in x-ray tubes due to its high atomic number and efficient x-ray production.

Mammography systems sometimes use molybdenum or rhodium as targets, but produce lower x-ray quantity due to lower atomic numbers.

Increasing the target material's atomic number shifts the characteristic x-ray spectrum to higher energies.

Changes in added filtration or target material affect the quality (average energy) and quantity (number) of x-rays produced.